A parlay is simply the American word for an accumulator. If you have placed accas at a UK bookmaker, you already understand parlays — the concept is identical, only the terminology differs.
Key US-to-UK Translation Table
Understanding the core terms unlocks all American betting content:
- Parlay = Accumulator (multiple selections, all must win)
- Moneyline = Match result / 1X2 (picking the outright winner)
- Spread / Point Spread = Handicap betting
- Totals (O/U) = Over/Under goals or points
- Juice / Vig = Overround / bookmaker margin
- Handle = Total amount wagered on a market
- Chalk = Favourite
- Dog = Underdog
- Action = A live, valid bet
How American Odds Work
US odds use a plus/minus system anchored to £100 (or $100):
- -150 means you must stake £150 to win £100 profit. In decimal: 1.67
- +200 means a £100 stake wins £200 profit. In decimal: 3.00
Quick Conversion
For negative odds: Decimal = 1 + (100 / absolute value). So -200 = 1 + (100/200) = 1.50
For positive odds: Decimal = 1 + (value / 100). So +150 = 1 + (150/100) = 2.50
Parlay Mechanics vs Accumulators
The mathematics is identical. A three-leg parlay at -110 on each leg works exactly like a three-fold accumulator at 1.91 per selection. The combined odds multiply: 1.91 x 1.91 x 1.91 = 6.97 (or roughly +597 in American format).
Same Game Parlays
One American innovation worth noting is the Same Game Parlay (SGP), which combines multiple selections from a single match. UK bookmakers have adopted this as "Bet Builder" — same concept, different branding.
Why This Matters
American sports betting content has exploded in volume and quality since legalisation spread across US states. NFL, NBA, and MLB analysis is overwhelmingly published in American terminology. European bettors who understand this vocabulary can access a vast pool of analytical content.
Beyond the Basics
Other terms you may encounter: teaser (an adjusted spread parlay with reduced odds), prop bet (a wager on a specific event within a game), and futures (long-term outright bets, identical to European ante-post markets). Each has a direct European equivalent — the betting concepts are universal, only the labels change.